Home / 10,507,886.32-15,761,829.52-8,115,220.88

Finding the Fourth Proportional to 10,507,886.32, 15,761,829.52 and 8,115,220.88

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Solution

The fourth proportional to 10,507,886.32, 15,761,829.52 and 8,115,220.88 is: 12,172,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,507,886.32 : 15,761,829.52 = 8,115,220.88 : x
  2. Step 2: Convert to fraction form
    10,507,886.32/15,761,829.52 = 8,115,220.88/x
  3. Step 3: Cross multiply
    10,507,886.32x = 15,761,829.52 × 8,115,220.88
  4. Step 4: Simplify right side
    10,507,886.32x = 127,910,728,027,704.38
  5. Step 5: Solve for x
    x = 127,910,728,027,704.38/10,507,886.32
  6. Step 6: Final answer
    x = 12,172,831.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.